Photophysics of CuInS2nanoparticles

Troy B. Kilburn ^a, Daniel R. Gamelin^a, Kathryn E. Knowles^a, Patrick J. Whitham^a, Arianna Marchioro^a

^aUniversity of Washington, US, Seattle, United States

Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe September Meeting 2015 (NFM15)

Santiago de Compostela, Spain, 2015 September 6th - 15th

Poster, Arianna Marchioro, 019
Publication date: 8th June 2015

CuInS2 (CIS) semiconductor nanocrystals have recently attracted attention as a less-toxic alternativeto CdSe and PbS. Absorption byCIS nanoparticles can be tuned throughout the visible range of the solar spectrum, which makes them attractive candidates for solar energy conversion applications. Compared to CdSe and PbS, which typically have a full-width half-maximum of ~50 100 meV, the width of the photoluminescence band in CIS is very large (~300 meV full-width half-maximum), as is the separation in energy between itsabsorption and emission peaks (~500 meV). The broad linewidth and large effective Stokes shift suggest the involvement of a defect state, the nature of which has been unclear. Interestingly, and contrary to defect emission in other semiconductor nanocrystals such as CdSe, the photoluminescence in CIS based nanocrystals can be very strong, and quantum yields greater than 80% have been reported. The combination of broad emission and large effective Stokes shift decreases the probability of reabsorption processes, making CISwell suited for applications such as white light-emitting diodesand luminescent solar concentrators. The spectroscopic characterizationof CIS nanoparticlesis of fundamental importance for optimizing their performance in these applications. This talk will present our group's recent spectroscopic findings for CIS and related semiconductor nanocrystals.

nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.

MATSUS

Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.

International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics

The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.

International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics

The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.